166026364565423 has 8 divisors (see below), whose sum is σ = 173283341336448. Its totient is φ = 158772591059544.

The previous prime is 166026364565407. The next prime is 166026364565441. The reversal of 166026364565423 is 324565463620661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166026364565423 - 2⁴ = 166026364565407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166026364561423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800710361 + ... + 800917682.

It is an arithmetic number, because the mean of its divisors is an integer number (21660417667056).

Almost surely, 2^{166026364565423} is an apocalyptic number.

166026364565423 is a deficient number, since it is larger than the sum of its proper divisors (7256976771025).

166026364565423 is a wasteful number, since it uses less digits than its factorization.

166026364565423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601632573.

The product of its (nonzero) digits is 111974400, while the sum is 59.

The spelling of 166026364565423 in words is "one hundred sixty-six trillion, twenty-six billion, three hundred sixty-four million, five hundred sixty-five thousand, four hundred twenty-three".